Arrangement in churns for churning and working butter



Dec. 3 1924- P. LARSEN I I ,ARRANGEMENT IN CHURNS FOR CHURNING AND WORKING BUTTER Filed F's 5. 25, 1922 FIG FIGQ.

Patented Dec. 30, 1924.

LABS PETER LARSEN, OF HORSENS, DENMARK.

Application filed February 25, 1922. Serial 1T0. 539,116.

To all whom it may concern:

Be it known that I, LARS PETER LARSEN, a subject of the King of Denmark, residing at 12 Borgergade, Horsens, Denmark, have invented certain new and useful Improvements in an Arrangement in Churns for Churning and \Vorking Butter, of which the following is a specification.

in churns of the kind in which in a revoluble barrel are disposed likewise revoluble rollers, between which the butter is worked, an inclined shelf is generally provided opposite to each pair of rollers, said shelf being inclined towards the wall of the barrel.

Such shelves may either be nailed to the wall of the barrel, so that they are close up to the said walls, or they may also form a part of such wall. They may also be secured to brackets or supports and leave a space between themselves and the wall. These shelves act partly as heaters during the churning operation, partly as shelves for receiving the butter, after the same has been worked and is to be removed from the churn.

These various constructions, however, all have the disadvantage that the said shelves render a cleaning of the churn exceedingly difficult. Besides the butter may collect behind them and not be fully worked. Neither is it possible to ascertain whether any remainders of butter which may accumulate behind these shelves, are thoroughly removed during the cleaning, as it would only by creeping into the barrel be possible to ascertain whether the space behind such shelves has been properly cleaned.

The aforementioned arrangements are, therefore, both from an engineering and from an economic point of view extremely defective and may, even. in consequence of their uncleanliness, become the cause of danger to the health.

ihe present invention completely obviates these disadvantages, by the said shelves being disposed pivotable on trunnions in the ends of the barrel. As the shelf can, therefore. be revolved while being rinsed, it can be cleaned equally well on both sides and it will be easy to control, whether all remainders of butter have been removed.

The present invention has, furthermore, the object of insuring a more rational op eration during churning than was heretofore possible, by the said pivotable beaters or shelves being adjustable, also during the operation of the churn, into a more or less inclined position, so that the churning of the cream is performed .in a, considerably more efficient manner. By such adjust ment of the said shelves, furthermore, the distance between these and the churning rollers and the wall of the barrel, respec-, tively, may be varied and this, in combination with the more or less inclined position of the shelves will have'a 'de'cided'influence on the churning and, allow of extending or shortening the duration ofthe operation. A similar effect may be obtained if the said shelves are omitted and the outer roller of each pair of rollers, i. e. the roller lying closest to the wall of the barrel, is arranged to be locked in various positions. In such case it will, for ensuring the desired influence on the churning operation, be necessary to arrange the outer roller so near to the wall of the barrel that the space between the roller and the wall will be essentially varied by the roller being locked in different positions. As the roller is not of a circular section, but has a section resembling a star or the like, it is possible, by locking the roller in various positions, to vary the distance between wall and roller to such an extent that it will have the desired effect on the churning operation and the thus locked roller will, in such case, act similarly to an adjustable heater or an adjustable shelf.

In the accompanying drawing two modifications of the present invention are shown by way of example.

Fig. 1 is a cross section through a churn and butter worker with rollers and shelves.

Fig. 2 is a longitudinal section through a part of the churn, on an enlarged scale.

1 is the rev'oluble barrel, 2 are the churning rollers and 3 are the shelves which may be of a rectangular, elliptic or some other section. To the end of each shelf is fitted a trunnion 4, journalled in a bearing 5 in the end wall of the barrel 1. This bearing 5, at the same time, serves as the cap of a gland 6. For facilitating the removal of the shelves the said gland may be made of such diameter, that the hole produced in theend wall of the barrel by the removal of said gland will be large enough to allow of the shelves being removed therethrough. To the end of trunnion 4 is fitted an arm 7 with a handle 8 and a catch 9 which, under action lit) of a spring which may be for instance, enclosed in the arm 7, is pressed against the gland 6. The latter has a ring shaped, turned face in which holes or recesses 10 are provided for receiving the catch 9. Two of these holes 10 may, be/diametrally opposite each other so that the shelves can only be set in these two positions. But also several holes may be provided, distributed in such a manner, that the shelves can be set in several corresponding positions, viz. transversely or parallel to the direction of rotation, or more-or less obliquely thereto.

In the constructional form shown the trunnion 4 is concentrical with the middle line of the shelf 3. If the trunnion is disposed eccentrically thereto the position of this shelfcan, if the shelf be turned through anangle of 180 degrees, be varied relatively to barrel and rollers without the incline towards them being changed.

I claim:

1. Inachurn, a barrel revoluble on a substantially horizontal axis, working rollers journaled in saidbarr'el revoluble on a'substantially horizontal axis, a lifting flight revoluble on a likewise substantially hori zontal axis, disposed between the working roller which is nearest to the wall of said barrel and said wall itself, said lifting flight having at each end a trunnion, said trunnions journaled in hearings in the end walls of said barrel, the one trunnion extended beyond said end wall, attached to said extending trunnion, a lever, and means for securing said lever in adjusted position.

2. In a churn, a barrel revo-luble on a substantially horizontal axis, Working rollers journaled in said barrel revoluble on a substantially horizontal axis, a lifting flight revoluble on a likewise substantially horizontal axis, disposed between the working roller which is nearest to the wall of said barrel andsaid wall itself, said lifting flight having at each end atrunnion, said trunnions journaled in hearings in the end walls of. said barrel, the one trunnion extended beyond said end wall, attached to said eX- tending' trunnion a lever, the said bearing forming the cap of a gland, in the face of said gland recesses, and on said lever a catch adapted to engage in said recesses in the face of the gland and thereby lock said lever.

In testimony whereof I affix my signatu re.

LABS PETER LARSEN. 

